Appeal No. 2005-2341 Παγε 5
Application No. 10/420,187
disposed within a hydraulic shoveling machine. A plurality of controllers 1, 2, 3 and 4
are mounted to the hydraulic shoveling machine. The controller 2 is a pump controller
for receiving a manipulation amount, etc. of an operating lever and controlling a swash
plate of a hydraulic pump according to the received manipulation amount. The pump
controller 2 also receives detection signals 10a, . . . from a plurality of sensors 10, . . .
such as hydraulic sensors provided in a hydraulic circuit. The pump controller 2 stores,
as control data, the received detection signals 10a, . . . and the driving signals 11a
outputted to the respective actuators 11, . . . . The pump controller 2 also creates fault
data (error data) indicative of faults in parts controlled by the pump controller 2 on the
basis of the stored control data, signals received from manipulated switches and the
manipulated amounts of the operating levers, and stores them as fault data.
The controller 3 is a governor controller 3 for controlling a governor in response
to a manipulation amount in an operating lever. The governor controller 3 outputs
driving signals 13a, . . . to a plurality of actuators 13, . . . such as governor motors. The
governor controller 3 receives detection signals 12a, . . . from a plurality of such sensors
12, . . . as engine rotational sensors for detecting the rotational speed of the engine.
The governor controller 3 also stores, as control data, the received detection signals
12a, . . . and the driving signals 13a, . . . to be outputted. Further, the governor
controller 3 creates fault data indicative of faults in parts controlled by the governor
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Last modified: November 3, 2007